Water-circulator for steam-boilers.



J. E. TULL.

WATER CIRCULATOR FOR STEAM BOILERS.

APPLICATION FILED JULY 31, 1913.

1,109,882. Patented Sept. 8, 1914.

2 SHEETSSHEET 2.

'llllll II II If I'llllllll IEHHIII I. i v v aflozg I aai'mebwm' Tamer ianoorrnrnmuvnw,YonKQ j To all whom it may concern Be it known that I, JOHN EDWIN TULL, a

citizen of the United. States, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Tater-Circulators for Steam-Boilers, of which the following is a specification.

The principal object of the invention is to promote the rapid circulation of the water and to rapidly equalize the temperature of the various parts of the boiler whereby is avoided the danger resulting from unequal expansion of the boiler owing to varying temperatures in the bottom and upper parts thereof.

My invention therefore consists in the means, hereinafter described andYfinally claimed, for effecting a rapid, continuous, and complete circulation of the water so that the same is maintained at a substan tially uniform or even temperature.

The nature, characteristic features and scope of the invention will more readily be understood from the following description taken in connection with the accompanying drawings, forming a part hereof, wherein- Figure 1 is a view with the head removed of a well-known type of marine boiler embodying my improvements. Fig. 2 is a longitudinal sectional view of the same- Fig. 3 is a seotional-elevational view of the circulator and the turbine or means for driving it; and Fig. 4L 1s a central vertical sectional view of the circulator and turbine.

Referring to the drawings, the numeral 1 represents the shell of a well-known type of marine boiler- 2 are the furnace lines; 3 are the return tubes through which the heated products pass; and 4 are stay bolts.

The circulator 5 and its motor or turbine 6 are mounted within the boiler a little below thewater level and may be carried on a common base or support, such asthe casting 7. The latter is secured by chairs 8 depending from two adjoining stay bolts.

The turbine may be of any appropriate design. That shown in the drawings embodies a common type of rotor or bucket device mounted ona shaft 9 within a suitable shell or casing 10, the inlet 11 of Which connects with the feed pump (not shown) by means of a pipe 12.

The circulator is illustrated in the form V spifiEauon of Ltt'ersraint'." Application fni xiiijsilisit'i", ea r vages-a.

of a centrifugal or suction pump consisting of a shaft 13 and radial blades or pistons 14, which cooperate with an appropriate hous ing 15, having an inlet 16 and an outlet or delivery part 17.

Connected with the inlet 16 are suction pipes 18, extending to the bottom ofthe boiler and equipped with perforate terminals 19. It is evident that when the pumpis operatingthe dead water will be drawn from the bottom of the boiler anddischarged by'the pump at the top so that there is a constant and rapid circulation of the water and a substantiallyuniform or even temperature.

Having described the-nature and object of the invention I claim 1. The combination with a steam boiler, of a turbine operated by the feed water supply, and means operated by the turbine for drawing the dead water from the bottom of the boiler and discharging it at the top thereof. J

2. The combination with a steam boiler, of a suction pump for drawing the dead Water from the bottom of the boiler and discharging it at the top thereof, and means redriving' sponsive to feed Water pressure for said pump.-

3. The combination with a steam boiler having an internal'furnace, of an intergeared turbine and suction pump, a feed water pipe 'connectedwith the inlet of the turbine, and suction pipes extending from the pump to the bottom of the boiler.

4. The combination with a steam boiler having an internal furnace, of a Water circulator and its complemental motor mounted on acommon base, and chairs to support 1 said base.

5. The combination with a steam boiler having an internal furnace, of a suction pump mounted in the boiler a little below the water level and having suction pipes extending to the bottom of the boiler and the stay'bolts and adapted and arranged to i equipped with perforate terminals, and carry said base. 10

means fordriving said pump in response to In testimony whereof I afiix my signature feed Water pressure.

6. The combination-With a steam boiler having stay bolts, of a Water oirculator and Witnesses: a feed Water driven motor mounted on a JoH'N B. NEAL, Jr., common base, and chairs depending from J 011w S. HANNAN.

in presence of two Witnesses.

JOHN EDWIN TULL.

Copies of this patent may be obtained for five-cents each, by addressing the Commissioner of Patents, Washington, D. C. 

